Results 1 to 10 of about 17,163 (306)

Design and optimization of high temperature optocouplers as galvanic isolation [PDF]

open access: yesScientific Reports, 2022
The commercial InGaN-based (blue and green) and AlGaInP-based (red) multiple quantum well (MQW) lighting emitting diodes (LEDs) were studied in a wide range of temperatures up to 800 K for their light emission and detection (i.e., LEDs operated under ...
Abbas Sabbar   +7 more
doaj   +6 more sources

Electro-isolation of galvanic current

open access: yesElectrochemistry Communications
An electro-isolation method was developed to address the stubborn issue of galvanic effect. This new technique is utterly different from any traditional corrosion-prevention methods in engineering.
Guang-Ling Song, Xinran Yao
doaj   +5 more sources

Development of LTCC-packaged optocouplers as optical galvanic isolation for high-temperature applications [PDF]

open access: yesScientific Reports, 2022
This paper reports high-temperature optocouplers for signal galvanic isolation. Low temperature co-fired ceramic (LTCC) technology was used in the design and fabrication of the high-temperature optocoupler package. The optimal coupling behaviors, driving
Pengyu Lai   +9 more
doaj   +2 more sources

A Fully Capacitive Transformer Device for Galvanic Isolation Applications

open access: yesIEEE Access
Galvanic isolation is commonly utilized in power transmission and data communication. Studies have explored inductive and electromagnetic coupling for isolation between nearby circuits, while optocoupler devices employ modulated light for data ...
Joao Francisco Justo   +3 more
doaj   +2 more sources

A Low-cost Optocoupler-Based Isolator System for IoT-Based Voltage Measurement in Low and High voltage DC Applications

open access: yesAfrican Scientific Reports, 2023
Internet of things (IoT) connected devices operate at extremely low voltages that are susceptible to common-mode noise and electromagnetic interference.
Ayomide Oluwaseyi Agunloye
doaj   +1 more source

Vertical Multi-Junction Laser Power Converters with 61% Efficiency at 30 W Output Power and with Tolerance to Beam Non-Uniformity, Partial Illumination, and Beam Displacement

open access: yesPhotonics, 2023
Stable and reliable optical power converting devices are obtained using vertical multi-junction laser power converters. They are based on the GaAs and the InP material systems and are used for power-over-fiber or power-beaming applications.
Simon Fafard, Denis Masson
doaj   +1 more source

Galvanically isolated modular converter [PDF]

open access: yesIET Power Electronics, 2016
Direct current (DC) electrical grids are already a reality in low voltage (LV) telecom distribution systems and point‐to‐point high voltage DC transmission. Medium voltage (MV) domain, despite its big potential, still suffers from a lack of suitable conversion and protection technologies. This study presents a bidirectional, galvanically isolated, high
Alexandre Christe, Drazen Dujic
openaire   +1 more source

Direct usage of photovoltaic solar panels to supply a freezer motor with variable DC input voltage [PDF]

open access: yes, 2020
In this paper, a single-phase photovoltaic (PV) inverter fed by a boost converter to supply a freezer motor with variable DC input is investigated. The proposed circuit has two stages.
Farzan Moghaddam, Ali   +1 more
core   +2 more sources

Input Parallel Output Series Structure of Planar Medium Frequency Transformers for 200 kW Power Converter: Model and Parameters Evaluation

open access: yesEnergies, 2021
Nowadays, the demand for high power converters for DC applications, such as renewable sources or ultra-fast chargers for electric vehicles, is constantly growing. Galvanic isolation is mandatory in most of these applications.
Alessandro La Ganga   +2 more
doaj   +1 more source

Conductive Electric Road Localization and Related Vehicle Power Control

open access: yesWorld Electric Vehicle Journal, 2022
Enabling vehicles to draw energy from an electric road system (ERS) significantly reduces the need for battery capacity on board the vehicle. It is not necessary, nor realistic, to cover every meter of every stretch of road with ERS.
Anton Karlsson, Mats Alaküla
doaj   +1 more source

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